Extrusion nozzle



March 1, 1938. w J MCCUE EXTRUSION NOZZLE Filed Dec. 15, 1935 INVENT'OR BY 3%.

' ATTORNEY that, Ms. 1, 1938 2,109,574

2,109,574 3 EXTRUSION NOZZLE William J. McCue, Chicago, Ill., assignor to Industrial Patents Corporation, Chicago, Ill., a corporation of Delaware Application December 13, 1935, Serial No. 54,199

15 Claims. (01. 226-83) This invention relates to an improved method The extrusion of material from tank I is conand apparatus for extruding ameat product. trolled by cock 8 in line 5.

One of the objects of this invention is to pro- My improved extrusion nozzle may be formed vide an improved means for filling trays with a from sheet metal or other suitable material and comminuted plastic meat product devoid of air comprises a cylindrical collar portion 9 provided 5 P ckets. I at one end with radial flange Ill and at its Another object of this invention is to provide opposite end with an upwardly extending, outw an improved extrusion nozzle in which a comwardly flared passageway II. In practice, pasminuted meat product under'pressure is forced sageway II is elevated susbtantlally 39 and in 10 through an elevated, graduated passageway in a the course of its elevation assumes the shape of a 10 manner preventing the formation of air pockets substantial rectangle gradually' increasing in therein. width and decreasing in height,

Another object of this invention is to provide At a suitable point in elevation, passageway I I a novel method of introducing a comminuted makes a Sharp curve d w w y to Open end product into a receiving tray devoid of air pockets for suitably dispensing the product. The side 15 by forcing the product under pressure through an walls of downward portion I3 are parallel elevated passageway to cause a back pressure, throughout their length and preferably define an said passageway being graduated to an opening opening of common relationship to passageway UNITED STATES. PATENT orricg 1 substantially the width of the receiving tray. I I at its highest point in elevation. Flange mem- Other objects will be apparent from the deber I4 is welded or otherwise secured at open end 20 scription and claims which follow. I2 at right angle to downward portion I3.

I have found that meat loaves formed from a Collar nut I5 having wing members It isprocomminuted product contain, to a large degree, a vided on collar 9 for securing'the'device by means number of air pockets of varying sizes. Such of flange III to line 5 of tank I.

air pockets have a deleterious effect upon the In practicing the present invention, receiving 5 finished product, prevent a maximum weight in tray ll of the conventional type may be manua minimum sized loaf and .cause an unsightly ally held about flange II as shown in Figure 2 appearance in the sliced product. By use of my of the drawing or, if desired, may be supported present method and apparatus, I am able to proupon a depressible supporting means not shown.

vide maximum emclency in the formation of meat Comminuted material is forced under pressure 30 loaves free of air pockets. from tank I to enter passageway I I. Due tothe Referring to the drawing: inclination of passageway I I, a back pressure will Figure 1 is a perspective view illustrating the result in the material passing therethrough and device of the present invention secured to one cause the material to compact in a manner detype of filling machine with which it may be void of air pockets. This back pressure, assisted 5 utilized and a stationary support for resting the by the decreasing height of passageway II, will receiving tray. also cause the material to spread evenly with the Figure 2 is an enlarged 'side elevational view increasing width of passageway II. illustrating the device of the present invention Flange I4 is in operative relationship with tray 40 with the receiving y h w dotted lineS- I1 and serves to prevent the product extruded 40 Figure 3 a Plan View of Figure 2 from opening I2 from rolling or folding over durfigure 4 1S a Plan View of the flange member ing the filling r tray 11, by which the product at extrusion end of the f is continuously compacted free of air pockets t fi the fi i i g g t g g fi throughout the filling operation. As the stufling m ng mac nes may u 8 W1 e pres operation proceeds, tray I1 is commensurately ent invention, I have illustrated in Figure 1 of the drawing one of the simpler types, in which the lowered with its filling until the material is level n res at h with the top of the tray, whence the supply is fig f i fg f i, f fi' g fi g 33: 3 cut off by cock 8. The filled tray is then pressed Material in tank I is forced under pressure firmly agamst the under side flange and 5 through t t line 5 through t medium of a removed by sliding it sideways, thereby providing piston or other suitable means provided within a Smooth surface On the p of the 1081- tank I. The piston in tank I may be operated .It will be understood that while the device of by compressed air entering through line 6, conthe present invention has been described for use trolled by a suitable valve operated from lever I. in forming a product of comminuted material, 55

sion nozzle defining a. substantiafi rectangular upwardly inclined passageway having a gradually increasing dimension in one direction in cross section and agradually decreasing dimension in the other direction in cross section for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway being terminated in a downwardly extending outlet portion.

2. In a device of the class described, an extrusion nozzle defining a substantially rectangular passageway inclined upwardly approximately 39 degrees, having a gradually increasing dimension inone direction in cross section and a gradually decreasing dimension in the other direction in cross section for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway being terminated in a substantially rectangular, downwardly extending, outlet portion atits elevated end.

- 3. In a device of the class described, an extrusion nozzle defining a substantially rectangular upwardly inclined passageway having a gradually increasing dimension in one direction in crosssection and a gradually decreasing dimension in the other direction in cross section for preventing the i'ormation of air pockets in a plastic product passed therethrough under pressure, said passageway being terminated in a downwardly ex tending discharge portion and an outwardly extending flange member secured at theoutlet end of said discharge portion in operative association with a product receiving tray to compact the material deposited therein.

- 4. In a device of the class described, an extrusion nozzle defining a substantially rectangular passageway inclined upwardly approximately 39 degrees, having a gradually increasing dimension in one direction in cross section and a gradually decreasing dimension in the other direction in cross section for preventing the formation of air pockets in a plastic product passed therethrough under pressure and terminating in asubstantially rectangular downwardly extending discharge portion, and an outwardly extending flange member secured at the outlet end of said discharge portion in operative association with a product receiving tray to compact the material deposited therein.

5. An extrusion nozzle of the class described defining an upwardly inclined passageway having a gradually increasing dimension in one direction in cross section and a gradually decreas-, ing dimension in the other direction in cross section and provided with a substantially rectangular outlet at its elevated end for preventing the formation of air pockets in a plastic product passed therethrough under pressure.

6. An extrusion nozzle of the class described defining an upwardly inclined passageway having a gradually increasing dimension in one direction incross section and a gradually decreasing dimension in the other direction in cross section and terminating in a substantially rectangular, downwardly extending, discharge portion at its elevated end and an outwardly extending flange member secured at the outlet end of said discharge portion. 1

7. An extrusion nozzle of the class described defining a passageway inclined upwardly approximately 39 degrees having a gradually increasing dimension in one direction in cross section and a gradually decreasing dimension in the other direction in cross section and terminating in a substantially rectangular, downwardly extending, discharge portion at its elevated end and an outwardly extending flange member secured at the outlet end of said discharge portion.

8. In a device of the class described, an extrusion nozzle defining an upwardly inclined passageway for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway being outwardly flared in cross section in a sidewise direction.

9. In a device of the class described, an extrusion nozzle defining an upwardly inclined passageway for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway being outwardly flared in cross section in a sidewise direction and terminating in a downwardly. extending outlet portion.

10. In a device of the class described, an extrusion nozzle deflning an upwardly inclined passageway for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway being outwardly flared in cross section in a sidewise direction and terminating in a downwardly extending outlet portion and an outwardly extending flanged member secured to the outlet end of said discharge portion.

11. In a device of the class described, an extrusion nozzle deflning an'upwardly inclinedpassageway for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway at its lowermost end being substantially circular in cross section and outwardly flared in a sidewisedirection to a form substantially rectangular in cross-section at its uppermost end.

. 12. In a device of the class described, an extrusion nozzle defining an upwardly inclined passageway for preventing the formation of air pockets in a plastic product passed therethrough under pressure, said passageway at its lowermost end being substantially circular in cross'section and outwardly flared in a sidewise direction to a form substantially rectangular in cross section at its uppermost end, said passageway being terminated in a-downwardly extending outlet por-' -means preventing the formation of air pockets in the discharged product comprising a downwardly extended substantially rectangular nozzle having one dimension substantially equal to one dimension of the receiving tray and a compressing and compacting means communicating with the nozzle comprisingan upwardly inclined passageway outwardly flared in a sidewise direction in cross section approaching the nozzle.

14. In an extrusion device adapted for the dis charge of plastic product into a receiving tray, means preventing the formation of air pockets in the discharged product comprising a downwardly extended substantially rectangular nozzle having one dimension substantially equal to one dimension of the receiving tray and a'compressing and compacting means communicating'with the nozzle comprising an upwardly inclined passageway having a gradually increasing dimension in one direction in cross section and a gradually decreasing dimension in the other direction in cross section approaching the nozzle.

15. In an extrusion device adapted for the discompacting means communicating with the nozzle comprising an upwardly inclined passageway having a gradually increasing dimension in one direction in cross section and a gradually decreasing dimension in the other direction in cross 5 section approachingthe nozzle, the nozzle at its discharge end being provided with an outwardly extended flange member.

. WILLIAM J. McCUE. 

